Search results for "Maremmana"

showing 3 items of 3 documents

Genome-wide homozygosity in Maremmana cattle

2017

The current availability of large numbers of single nucleotide polymorphisms (SNPs) throughout the genome makes these markers particularly suitable for the detection of patterns of genetic diversity and of genome-wide homozygosity in animal populations. The aim of this work was to estimate genetic diversity and homozygosity in the Maremmana cattle breed. We used a sample of 149 animals (males and females) geno-typed with the BovineSNP50 v2 (54K) Illumina BeadChip. After editing for call-rate >0.9 and removing SNP unassigned or on the sex chromosomes, 128 animals and 50,814 SNPs were left. We estimated the following genetic parameters: observed and expected heterozygosity (Ho and He), minor …

Bivine GenomeSettore AGR/17 - Zootecnica Generale E Miglioramento Geneticoruns of homozygosity (ROH)genome-wide homozygositySNPs Markers Bivine Genome Marremmana Breed runs of homozygosity (ROH)maremmana cattleSNPs MarkersSNP markersMarremmana BreedROH Maremmana breed SNPs autozygosity
researchProduct

Genome-Wide Analysis Reveals Selection Signatures Involved in Meat Traits and Local Adaptation in Semi-Feral Maremmana Cattle

2021

The Maremmana cattle is an ancient Podolian-derived Italian breed raised in semi-wild conditions with distinctive morphological and adaptive traits. The aim of this study was to detect potential selection signatures in Maremmana using medium-density single nucleotide polymorphism array. Putative selection signatures were investigated combining three statistical approaches designed to quantify the excess of haplotype homozygosity either within (integrated haplotype score, iHS) or among pairs of populations (Rsb and XP-EHH), and contrasting the Maremmana with a single reference population composed of a pool of seven Podolian-derived Italian breeds. Overall, the three haplotype-based analyses …

0301 basic medicineCandidate geneMaremmanaQH426-470selection signaturesdiversitySettore AGR/17 - Zootecnica Generale E Miglioramento Genetico03 medical and health sciencesGeneticslocal cattle breedsenvironmental adaptationGeneGenetics (clinical)Selection (genetic algorithm)Original ResearchLocal adaptation2. Zero hungerbiology[SDV.BA]Life Sciences [q-bio]/Animal biologyHaplotype0402 animal and dairy science04 agricultural and veterinary sciencescandidate genes; diversity; environmental adaptation; local cattle breeds; selection signaturesbiology.organism_classification040201 dairy & animal science3. Good healthlocal cattle breeds selection signatures diversity candidate genes environmental adaptation030104 developmental biologyEvolutionary biologyMolecular MedicineAdaptationcandidate genes diversity environmental adaptation local cattle breeds selection signaturescandidate genesFunction (biology)
researchProduct

Insights into Genetic Diversity, Runs of Homozygosity and Heterozygosity-Rich Regions in Maremmana Semi-Feral Cattle Using Pedigree and Genomic Data

2020

Semi-feral local livestock populations, like Maremmana cattle, are the object of renewed interest for the conservation of biological diversity and the preservation and exploitation of unique and potentially relevant genetic material. The aim of this study was to estimate genetic diversity parameters in semi-feral Maremmana cattle using both pedigree- and genomic-based approaches (FIS and FROH), and to detect regions of homozygosity (ROH) and heterozygosity (ROHet) in the genome. The average heterozygosity estimates were in the range reported for other cattle breeds (HE=0.261, HO=0.274). Pedigree-based average inbreeding (F) was estimated at 4.9%. The correlation was low between F and genomi…

Candidate geneMaremmanaGenomic relationshipinbreedingheterozygosity-rich regionspedigree relationshipsBiologyRuns of Homozygositymaremmana cattleGenomeArticlesemi-feral cattleLoss of heterozygositySettore AGR/17 - Zootecnica Generale E Miglioramento Geneticomaremmana cattle; runs of homozygosity; inbreeding; heterozygosity-rich regions; pedigree relationships; genomic relationshipslcsh:ZoologyGenomic relationships; Heterozygosity-rich regions; Inbreeding; Maremmana cattle; Pedigree relationships; Runs of homozygositylcsh:QL1-991genomic relationshipsruns of homozygosityGenetic diversitylcsh:Veterinary medicineGeneral Veterinarybusiness.industrygenetic diversitybiology.organism_classificationROH islandsTheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGESEvolutionary biologylcsh:SF600-1100Pedigree relationshipAnimal Science and ZoologyLivestockbusinessHeterozygosity-rich regionInbreedinglinkage disequilibriumeffective population sizeAnimals
researchProduct